TLA  Line data    Source code

       1                 : // evmone: Fast Ethereum Virtual Machine implementation
       2                 : // Copyright 2023 The evmone Authors.
       3                 : // SPDX-License-Identifier: Apache-2.0
       4                 : 
       5                 : #pragma once
       6                 : #include "hash_utils.hpp"
       7                 : #include <span>
       8                 : 
       9                 : namespace evmone::state
      10                 : {
      11                 : struct Log;
      12                 : struct TransactionReceipt;
      13                 : 
      14                 : /// The 2048-bit hash suitable for keeping an Ethereum bloom filter of transactions logs.
      15                 : struct BloomFilter
      16                 : {
      17                 :     //// The 256 bytes of the bloom filter value.
      18                 :     uint8_t bytes[256] = {};
      19                 : 
      20                 :     /// Implicit operator converting to bytes_view.
      21 CBC         159 :     inline constexpr operator bytes_view() const noexcept { return {bytes, sizeof(bytes)}; }
      22                 : };
      23                 : 
      24                 : /// Computes combined bloom fitter for set of logs.
      25                 : /// It's used to compute bloom filter for single transaction.
      26                 : [[nodiscard]] BloomFilter compute_bloom_filter(std::span<const Log> logs) noexcept;
      27                 : 
      28                 : /// Computes combined bloom fitter for set of TransactionReceipts
      29                 : /// It's used to compute bloom filter for a block.
      30                 : [[nodiscard]] BloomFilter compute_bloom_filter(
      31                 :     std::span<const TransactionReceipt> receipts) noexcept;
      32                 : 
      33                 : /// Loads BloomFilter from bytes_view
      34                 : BloomFilter bloom_filter_from_bytes(const bytes_view& data) noexcept;
      35                 : 
      36                 : }  // namespace evmone::state